221661114 has 16 divisors (see below), whose sum is σ = 443568000. Its totient is φ = 73846080.

The previous prime is 221661103. The next prime is 221661119. The reversal of 221661114 is 411166122.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (221661119) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2754 + ... + 21234.

It is an arithmetic number, because the mean of its divisors is an integer number (27723000).

Almost surely, 2^221661114 is an apocalyptic number.

221661114 is an abundant number, since it is smaller than the sum of its proper divisors (221906886).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221661114 is a wasteful number, since it uses less digits than its factorization.

221661114 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20485.

The product of its digits is 576, while the sum is 24.

The square root of 221661114 is about 14888.2878129085. The cubic root of 221661114 is about 605.1966339418.

The spelling of 221661114 in words is "two hundred twenty-one million, six hundred sixty-one thousand, one hundred fourteen".